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| 利用泄漏电流分帧与小波技术识别覆冰绝缘子闪络故障 | |
| 引用本文： | 李毅,周野,钟浩,吴政球,胡向阳,聂云,李建奇.利用泄漏电流分帧与小波技术识别覆冰绝缘子闪络故障[J].高压电器,2011,47(2):27-30. |
| 作者姓名： | 李毅 周野 钟浩 吴政球 胡向阳 聂云 李建奇 |
| 作者单位： | 1. 湖南大学电气与信息工程学院,长沙,410082;湖南省电力公司张家界电业局,张家界,427000 2. 湖南大学电气与信息工程学院,长沙,410082 3. 湖南省电力公司张家界电业局,张家界,427000 4. 中南林业科技大学,长沙,410004 |
| 基金项目： | 湖南省科技厅工业支撑计划项目(2010GK3190);湖南省科技厅重点项目(2008FJ2004)~~ |
| 摘 要： | 在人工气候室内,通过动态采集3片串XP-70覆冰绝缘子融冰过程中的泄漏电流,并在比较传统利用时频域分析泄漏电流存在不足的基础上,提出了对闪络全过程的泄漏电流采用分帧计算参考量:短时能量信号和过零率信号的极值,利用小波分解重构能量信号与过零率信号的包络曲线,从而从数值和曲线2个直观的角度快速地为覆冰绝缘子闪络故障的发生提... |
| 关 键 词： | 覆冰绝缘子 放电 闪络 分帧 小波 预警 |
Recognition of Flashover Fault on the Iced Insulator Based on Frame Segmentation and Wavelet Technology for Leakage Current |
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| LI Yi,ZHOU Ye,ZHONG Hao,WU Zheng-qiu,HU Xiang-yang,NIE Yun,LI Jian-qi.Recognition of Flashover Fault on the Iced Insulator Based on Frame Segmentation and Wavelet Technology for Leakage Current[J].High Voltage Apparatus,2011,47(2):27-30. | |
| Authors: | LI Yi ZHOU Ye ZHONG Hao WU Zheng-qiu HU Xiang-yang NIE Yun LI Jian-qi |
| Affiliation: | LI Yi1,2,ZHOU Ye1,ZHONG Hao1,WU Zheng-qiu1,HU Xiang-yang2,NIE Yun2,LI Jian-qi3(1.College of Electrical & Information Engineering,Hunan University,Changsha 410082,China,2.Zhangjiajie Electric Power Bureau of Hunan Power Grid,Zhangjiajie 427000,3.Central South University of Forestry & Technology,Changsha 410004,China) |
| Abstract: | The traditional leakage current's time-frequency analysis method has some insufficiencies.Through dynamic measuring leakage current on the 3-piece string iced insulators at ice-melting stage in artificial climate chamber,this paper proposed that uses frame segmentation method to calculate the reference values:the extreme value of short-time energy signal and zero-cross signal.Through using wavelet decomposition reconstructing the envelope curves of energy signal and zero-cross signal,provides early warning ... |
| Keywords: | iced insulator discharge flashover frame segmentation wavelet early warning |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |